Home / 2,581.08-3,872.98-1,121.25

Finding the Fourth Proportional to 2,581.08, 3,872.98 and 1,121.25

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Solution

The fourth proportional to 2,581.08, 3,872.98 and 1,121.25 is: 1,682.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.08 : 3,872.98 = 1,121.25 : x
  2. Step 2: Convert to fraction form
    2,581.08/3,872.98 = 1,121.25/x
  3. Step 3: Cross multiply
    2,581.08x = 3,872.98 × 1,121.25
  4. Step 4: Simplify right side
    2,581.08x = 4,342,594.75
  5. Step 5: Solve for x
    x = 4,342,594.75/2,581.08
  6. Step 6: Final answer
    x = 1,682.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.